REPORT OF THE STATE ENTOMOLOGIST 1916 203 



Mesonotum dark brown or black, the submedian lines sparsely 

 clothed with fine hairs. • Scutellum dark brown, postscutellum 

 yellowish or fuscous brown. Abdomen dark brown with submedian 

 rows of small, lunate, silvery white spots, the markings being 

 on the posterior margin of the first to sixth segments, the posterior 

 segments fuscous yellowish, the venter suffused with silvery scales. 

 Wings hyaline, costa dark brown, discal spot white, the third vein 

 uniting with the margin near the basal half. Halteres pale yellowish. 

 Legs dark brown, the first tarsal segment and narrow basal annulations 

 on the second to fifth, white; claws rather long, stout, strongly 

 curved, the pulvilli as long as the claws. Genitalia; basal clasp seg- 

 ment long; terminal clasp segment strongly swollen basally; dorsal 

 plate broad, tapering, broadly and triangularly emarginate; ventral 

 plate narrow, tapering, narrowly rounded. Harpes long, narrow, 

 tapering, subacute, dentate. 



Female. Length 2.5 mm. Antennae dark brown, basally silvery 

 white; 23 segments, the fifth with a length a little less than its 

 diameter; terminal segment somewhat produced, broadly obovate, 

 color as in the opposite sex. Ovipositor about two-thirds the length 

 of the abdomen, terminal lobe narrowly oval. Type Cecid. a 141 3. 



Neolasioptera menthae Felt 



1909 Felt, E. P. Econ. Ent. Jour., 2:288 



This species was reared May 13 and 19, 1908, by Mr L. H. 

 Weld from a polythalamous gall taken on a mint stem in the 

 vicinity of Chicago. 



Gall. The gall is from 6 to 12 mm long, somewhat oblong, 

 polythalamous and pithy and contains orange colored larvae some 

 3 mm long. 



Male. Length 1.5 mm. Antennae dark brown, yellowish basally, 

 17 segments, the fifth with a length nearly equal its diameter; 

 terminal segment slightly reduced, broadly oval. Palpi;' the first 

 segment short, stout, irregular, the second narrowly oval, the third 

 a little longer, more slender, the fourth one-half longer than the 

 third, slender. Mesonotum dull brownish black, the submedian 

 lines sparsely haired. Scutellum dark brown, sparsely clothed 

 apically with silvery white scales, postscutellum dark reddish brown. 

 Abdomen dark brown, the segments broadly margined posteriorly 

 with silvery white scales, the markings on the second to seventh 

 segments broadly interrupted mesially; venter with a broad, median, 

 silvery stripe, the segments laterally margined posteriorly with 

 silvery. Wings hyaline, costa dark brown, the third vein uniting 

 with costa near the basal third, the discal spot yellowish. Halteres 

 pale yellowish. Coxae and femora basally mostly yellowish, the 

 distal portion of femora, tibiae and tarsi dark brown, the articulations 

 narrowly white-banded, those of the posterior legs broadly so; 

 the basal half of the second to fifth tarsal segments of the latter 

 yellowish white; claws long, stout, the pulvilli as long as the claws. 



